code: def __init__(self):
      self.args = self.get_args()
      self.input_files = self.args.input_files
      self.out_dir = self.args.out_dir
      self.min_freq = self.args.min_freq
      self.vocab_file_name = self.args.vocab_file_name
  
file_path: mmf/tools/scripts/gqa/extract_vocabulary.py
imports: import argparse
  import json
  import os
  from collections import Counter
  from mmf.utils.text import tokenize
label_desc: Use image node_id 1 to create a new ExtractVocabulary object  with example: obj = ExtractVocabulary()